Recent Captain America TV spots have offered more footage of Chris Evans as Cap in motion, taking on everything from an underwater submarine to enemy Hydra soldiers with his bare hands. As a result, director Joe Johnston’s Cap movie has looked all the more appealing, with regards to it being a fun and action-packed period adventure that also sets the stage for Marvel’s next big film, The Avengers.

A newly-released pair of Captain America clips further play up the costumed hero’s tough side, by revealing Steve Rogers as he endures the all-too-painful Super Serum treatment process – and when he’s a full-blown hero, knocking out opponents left and right, with his iconic shield.

Longtime fans should definitely appreciate seeing Cap in action, using his classic weapon with the same degree of precision and finesse that his comic book incarnation has managed throughout the ages. Going off previous attempts to bring Captain America to the screen (namely, the campy 1990 film adaptation), we know just how badly that aspect of the character can be handled.

Sadly, though, the “Birth of Captain America” clip cuts off just before what looks to be possibly the funniest moment in the film (ie. when Hayley Atwell’s Peggy Carter cops a feel of the newly muscular Steve Rogers). Guess we’ll have to watch the actual film for that one, right?

Check out both the “Birth of Captain America” scene and an action clip from the film (via Yahoo! Movies, MTV and IGN) below:

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One thing that we can already commend Johnston for is (as illustrated by the above fight scene) his decision to shoot the action in Captain America with a steady hand that allows viewers to actually follow what’s going on. Marvel’s last in-house production, Thor, tended to be a bit uncomfortably rough in that regard, at times. The clip also suggests that the film might be more enjoyable to watch in 3D than a lot of other titles which were post-converted into the format.

The small sample of Alan Silvestri’s orchestral score for Captain America included in this footage also seems appropriately patriotic and fitting for the 1940s setting of the film. The movie looks, sounds, and feels quite different from just about every other comic book superhero pic that has hit theaters over the past couple of months, which should also help to attract interest from people who’ ve tired of watching super-powered individuals duke it out with colorful villains on the big screen.

Captain America:The First Avenger rides in 2D and 3D theaters next week on July 22nd, 2011.